title: Are modern voice prostheses better? A lifetime comparison of 749 voice prostheses.
abstract: The aim of the study was to compare device life of more recent indwelling voice prostheses Provox Vega and Blom-Singer Dual Valve to device life of well-known standard devices (Provox 2, Blom-Singer Classic). In a prospective, non-randomised study, device life of Blom-Singer Classic, Blom-Singer Dual Valve, Provox2, Provox Vega and Provox ActiValve voice prostheses was recorded in a group of 102 laryngectomised patients. In total 749 voice prosthesis were included. Average overall life time was 108 days, median 74 days. The prosthesis with the longest dwell time was the Provox ActiValve (median 291 days). Provox Vega had longer device life compared with Provox2 (median 92 days vs 66 days; p = 0.006) and compared with Blom-Singer Classic (median 92 days vs 69 days; p = 0.004). In conclusion, device lifetimes of Provox Vega and ActiValve were better than those of Provox2 and the Blom-Singer Classic. New voice prostheses, with a defined valve opening pressure (Provox Vega, Provox ActiValve, Blom-Singer Dual Valve) had longer lifetimes than prostheses without a defined opening pressure (Blom-Singer Classic and Provox 2).
authors.affiliation: Klinikum Mutterhaus der Borromaerinnen, Feldstrasse 16, 54290, Trier, Germany, kresspeter@yahoo.de.
authors.forename: P
authors.initials: P
authors.lastname: Kress
authors.forename: P
authors.initials: P
authors.lastname: Schäfer
authors.forename: F P
authors.initials: FP
authors.lastname: Schwerdtfeger
authors.forename: S
authors.initials: S
authors.lastname: Rösler
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007831:Larynx, Artificial; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011474:Prosthesis Design